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ikadub [295]
3 years ago
8

How are new molecules of dna synthesized in living cells?

Biology
2 answers:
Nuetrik [128]3 years ago
7 0

Answer:

DNA replication.

Explanation:

DNA is the genetic material of all the living organisms except some viruses. Replication may be defined as the the biological process by which two daughter DNA are produced from the parental DNA strand.

Three important process of replication are initiation, elongation and termination. In initiation process, the DNA is unwind and enzymes are placed at the ori site. During elongation, DNA polymerase synthesizes the DNA strand from 5' to 3' direction. A termination site in the DNA results in the termination of DNA replication.

Thus, the new molecules of DNA in living cells are synthesized by DNA replication.

vladimir1956 [14]3 years ago
3 0

It begins with the unzipping of the double helix by helicases. Unzipping forms y-shaped replication forks exposing promoter regions (TATA regions) where the initiator proteins and factor bind to the regions of DNA. A primer also attaches to the region. DNA polymerase then binds to the regions and begins adding DNA nucleotides to the 3’ end of the primer based on the nucleotides on the template strand. Topoisomerase continues to unwind the DNA as the polymerase progresses to the end of replication.






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